diff --git a/api-reports/2_12.txt b/api-reports/2_12.txt
index 2b1199232..8897b6cf6 100644
--- a/api-reports/2_12.txt
+++ b/api-reports/2_12.txt
@@ -1348,6 +1348,12 @@ CompositionEventInit[JT] var detail: js.UndefOr[Int]
 CompositionEventInit[JT] var locale: js.UndefOr[String]
 CompositionEventInit[JT] var scoped: js.UndefOr[Boolean]
 CompositionEventInit[JT] var view: js.UndefOr[Window]
+CompressionFormat[JT]
+CompressionFormat[SO] val deflate: CompressionFormat
+CompressionFormat[SO] val `deflate-raw`: CompressionFormat
+CompressionFormat[SO] val gzip: CompressionFormat
+CompressionStream[JC] def readable: ReadableStream[Uint8Array]
+CompressionStream[JC] def writable: WriteableStream[Uint8Array]
 ConcatParams[JT] val algorithmId: BufferSource
 ConcatParams[JT] val hash: HashAlgorithmIdentifier
 ConcatParams[JT] val name: String
@@ -1561,6 +1567,8 @@ DataTransferItemList[JC] @js.annotation.JSBracketAccess def apply(index: Int): D
 DataTransferItemList[JC] def clear(): Unit
 DataTransferItemList[JC] def length: Int
 DataTransferItemList[JC] def remove(index: Int): Unit
+DecompressionStream[JC] def readable: ReadableStream[Uint8Array]
+DecompressionStream[JC] def writable: WriteableStream[Uint8Array]
 DedicatedWorkerGlobalScope[JO] def self: DedicatedWorkerGlobalScope
 DedicatedWorkerGlobalScope[JT] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 DedicatedWorkerGlobalScope[JT] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
diff --git a/api-reports/2_13.txt b/api-reports/2_13.txt
index 2b1199232..8897b6cf6 100644
--- a/api-reports/2_13.txt
+++ b/api-reports/2_13.txt
@@ -1348,6 +1348,12 @@ CompositionEventInit[JT] var detail: js.UndefOr[Int]
 CompositionEventInit[JT] var locale: js.UndefOr[String]
 CompositionEventInit[JT] var scoped: js.UndefOr[Boolean]
 CompositionEventInit[JT] var view: js.UndefOr[Window]
+CompressionFormat[JT]
+CompressionFormat[SO] val deflate: CompressionFormat
+CompressionFormat[SO] val `deflate-raw`: CompressionFormat
+CompressionFormat[SO] val gzip: CompressionFormat
+CompressionStream[JC] def readable: ReadableStream[Uint8Array]
+CompressionStream[JC] def writable: WriteableStream[Uint8Array]
 ConcatParams[JT] val algorithmId: BufferSource
 ConcatParams[JT] val hash: HashAlgorithmIdentifier
 ConcatParams[JT] val name: String
@@ -1561,6 +1567,8 @@ DataTransferItemList[JC] @js.annotation.JSBracketAccess def apply(index: Int): D
 DataTransferItemList[JC] def clear(): Unit
 DataTransferItemList[JC] def length: Int
 DataTransferItemList[JC] def remove(index: Int): Unit
+DecompressionStream[JC] def readable: ReadableStream[Uint8Array]
+DecompressionStream[JC] def writable: WriteableStream[Uint8Array]
 DedicatedWorkerGlobalScope[JO] def self: DedicatedWorkerGlobalScope
 DedicatedWorkerGlobalScope[JT] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 DedicatedWorkerGlobalScope[JT] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
diff --git a/dom/src/main/scala-2/org/scalajs/dom/CompressionFormat.scala b/dom/src/main/scala-2/org/scalajs/dom/CompressionFormat.scala
new file mode 100644
index 000000000..220dcc8f4
--- /dev/null
+++ b/dom/src/main/scala-2/org/scalajs/dom/CompressionFormat.scala
@@ -0,0 +1,14 @@
+package org.scalajs.dom
+
+import scala.scalajs.js
+
+@js.native
+sealed trait CompressionFormat extends js.Any
+
+object CompressionFormat {
+  val deflate: CompressionFormat = "deflate".asInstanceOf[CompressionFormat]
+
+  val `deflate-raw`: CompressionFormat = "deflate-raw".asInstanceOf[CompressionFormat]
+
+  val gzip: CompressionFormat = "gzip".asInstanceOf[CompressionFormat]
+}
diff --git a/dom/src/main/scala-3/org/scalajs/dom/CompressionFormat.scala b/dom/src/main/scala-3/org/scalajs/dom/CompressionFormat.scala
new file mode 100644
index 000000000..cd5d630bc
--- /dev/null
+++ b/dom/src/main/scala-3/org/scalajs/dom/CompressionFormat.scala
@@ -0,0 +1,13 @@
+package org.scalajs.dom
+
+import scala.scalajs.js
+
+opaque type CompressionFormat <: String = String
+
+object CompressionFormat {
+  val deflate: CompressionFormat = "deflate"
+
+  val `deflate-raw`: CompressionFormat = "deflate-raw"
+
+  val gzip: CompressionFormat = "gzip"
+}
diff --git a/dom/src/main/scala/org/scalajs/dom/CompressionStream.scala b/dom/src/main/scala/org/scalajs/dom/CompressionStream.scala
new file mode 100644
index 000000000..7842b46a4
--- /dev/null
+++ b/dom/src/main/scala/org/scalajs/dom/CompressionStream.scala
@@ -0,0 +1,19 @@
+/** All documentation for facades is thanks to Mozilla Contributors at https://developer.mozilla.org/en-US/docs/Web/API
+  * and available under the Creative Commons Attribution-ShareAlike v2.5 or later.
+  * http://creativecommons.org/licenses/by-sa/2.5/
+  *
+  * Everything else is under the MIT License http://opensource.org/licenses/MIT
+  */
+package org.scalajs.dom
+
+import scala.scalajs.js
+import scala.scalajs.js.annotation._
+import scala.scalajs.js.typedarray.Uint8Array
+
+/** An API for compressing a stream of data. */
+@js.native
+@JSGlobal
+class CompressionStream(format: CompressionFormat) extends js.Object {
+  def readable: ReadableStream[Uint8Array] = js.native
+  def writable: WriteableStream[Uint8Array] = js.native
+}
diff --git a/dom/src/main/scala/org/scalajs/dom/DecompressionStream.scala b/dom/src/main/scala/org/scalajs/dom/DecompressionStream.scala
new file mode 100644
index 000000000..8eb1f9ccb
--- /dev/null
+++ b/dom/src/main/scala/org/scalajs/dom/DecompressionStream.scala
@@ -0,0 +1,19 @@
+/** All documentation for facades is thanks to Mozilla Contributors at https://developer.mozilla.org/en-US/docs/Web/API
+  * and available under the Creative Commons Attribution-ShareAlike v2.5 or later.
+  * http://creativecommons.org/licenses/by-sa/2.5/
+  *
+  * Everything else is under the MIT License http://opensource.org/licenses/MIT
+  */
+package org.scalajs.dom
+
+import scala.scalajs.js
+import scala.scalajs.js.annotation._
+import scala.scalajs.js.typedarray.Uint8Array
+
+/** An API for decompressing a stream of data. */
+@js.native
+@JSGlobal
+class DecompressionStream(format: CompressionFormat) extends js.Object {
+  def readable: ReadableStream[Uint8Array] = js.native
+  def writable: WriteableStream[Uint8Array] = js.native
+}